<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>区域保护</title>
    <style>
        body {
            background-color: #333;
        }
        
        /* 设置背景图 固定   */
        .map {
            position: relative;  
            width: 747px;
            height: 616px;
            background: url(./mag/sz.jpg) no-repeat;
            background-size: contain;
            margin: 0 auto;
        }
        
        /* 龙岗 */
        .city {
            position: absolute;
            top: 251px;
            right: 336px;
            color: #fff;
        }
        /* 南山 */
        .ns {
            top: 360px;
            right: 575px;
        }

        /* 罗湖 */
        .Lh {
            top: 331px;
            right: 380px;
        }
        /* 福田 */
        .ft {
            top: 381px;
            right: 492px;
        }
        /* 龙华 */
        .lh {
            top: 266px;
            right: 515px;
        }

        /* 蓝点 */
        .dotted {
            width: 8px;
            height: 8px;
            background-color: #09f;
            border-radius: 100%;
        }
        /*  ^ 开头     
            % 结尾    
            * 包含      */
        .city div[class^="pulse"] {
            /* 保证我们小波纹在父盒子里面水平垂直居中 放大之后就会中心向四周发散 */
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 8px;
            height: 8px;
            box-shadow: 0 0 12px #009dfd;
            border-radius: 50%;
            animation: pulse 1.2s linear infinite;
        }

        .city div.pulse2 {
            animation-delay: 0.4s;
        }

        .city div.pulse3 {
            animation-delay: 0.8s;
        }

        /* 动画 */
        @keyframes pulse {
            0% {}
            70% {
                /* transform: scale(5);  2D位移  会出现，阴影变大，不对齐 */
                width: 40px;
                height: 40px;
                opacity: 1;
            }
            100% {
                width: 70px;
                height: 70px;
                opacity: 0;
            }
        }

    </style>
</head>

<body>
    <div class="map">
        <div class="city">
            <div class="dotted"></div>
            <div class="pulse1"></div>
            <div class="pulse2"></div>
            <div class="pulse3"></div>
        </div>
        <div class="city ns">
            <div class="dotted"></div>
            <div class="pulse1"></div>
            <div class="pulse2"></div>
            <div class="pulse3"></div>
        </div>
        <div class="city Lh">
            <div class="dotted"></div>
            <div class="pulse1"></div>
            <div class="pulse2"></div>
            <div class="pulse3"></div>
        </div>
        <div class="city ft">
            <div class="dotted"></div>
            <div class="pulse1"></div>
            <div class="pulse2"></div>
            <div class="pulse3"></div>
        </div>
        <div class="city lh">
            <div class="dotted"></div>
            <div class="pulse1"></div>
            <div class="pulse2"></div>
            <div class="pulse3"></div>
        </div>
    </div>
</body>

</html>